src/gallium/drivers/llvmpipe/lp_texture.h

   1 /**************************************************************************
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   3  * Copyright 2007 VMware, Inc.
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   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
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  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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  25  *
  26  **************************************************************************/
  27
  28 #ifndef LP_TEXTURE_H
  29 #define LP_TEXTURE_H
  30
  31
  32 #include "pipe/p_state.h"
  33 #include "util/u_debug.h"
  34 #include "lp_limits.h"
  35
  36
  37 enum lp_texture_usage
  38 {
  39    LP_TEX_USAGE_READ = 100,
  40    LP_TEX_USAGE_READ_WRITE,
  41    LP_TEX_USAGE_WRITE_ALL
  42 };
  43
  44
  45 struct pipe_context;
  46 struct pipe_screen;
  47 struct llvmpipe_context;
  48
  49 struct sw_displaytarget;
  50
  51
  52 /**
  53  * llvmpipe subclass of pipe_resource.  A texture, drawing surface,
  54  * vertex buffer, const buffer, etc.
  55  * Textures are stored differently than other types of objects such as
  56  * vertex buffers and const buffers.
  57  * The latter are simple malloc'd blocks of memory.
  58  */
  59 struct llvmpipe_resource
  60 {
  61    struct pipe_resource base;
  62
  63    /** Row stride in bytes */
  64    unsigned row_stride[LP_MAX_TEXTURE_LEVELS];
  65    /** Image stride (for cube maps, array or 3D textures) in bytes */
  66    unsigned img_stride[LP_MAX_TEXTURE_LEVELS];
  67    /** Number of 3D slices or cube faces per level */
  68    unsigned num_slices_faces[LP_MAX_TEXTURE_LEVELS];
  69    /** Offset to start of mipmap level, in bytes */
  70    unsigned mip_offsets[LP_MAX_TEXTURE_LEVELS];
  71
  72    /**
  73     * Display target, for textures with the PIPE_BIND_DISPLAY_TARGET
  74     * usage.
  75     */
  76    struct sw_displaytarget *dt;
  77
  78    /**
  79     * Malloc'ed data for regular textures, or a mapping to dt above.
  80     */
  81    void *tex_data;
  82
  83    /**
  84     * Data for non-texture resources.
  85     */
  86    void *data;
  87
  88    boolean userBuffer;  /** Is this a user-space buffer? */
  89    unsigned timestamp;
  90
  91    unsigned id;  /**< temporary, for debugging */
  92
  93 #ifdef DEBUG
  94    /** for linked list */
  95    struct llvmpipe_resource *prev, *next;
  96 #endif
  97 };
  98
  99
 100 struct llvmpipe_transfer
 101 {
 102    struct pipe_transfer base;
 103
 104    unsigned long offset;
 105 };
 106
 107
 108 /** cast wrappers */
 109 static INLINE struct llvmpipe_resource *
 110 llvmpipe_resource(struct pipe_resource *pt)
 111 {
 112    return (struct llvmpipe_resource *) pt;
 113 }
 114
 115
 116 static INLINE const struct llvmpipe_resource *
 117 llvmpipe_resource_const(const struct pipe_resource *pt)
 118 {
 119    return (const struct llvmpipe_resource *) pt;
 120 }
 121
 122
 123 static INLINE struct llvmpipe_transfer *
 124 llvmpipe_transfer(struct pipe_transfer *pt)
 125 {
 126    return (struct llvmpipe_transfer *) pt;
 127 }
 128
 129
 130 void llvmpipe_init_screen_resource_funcs(struct pipe_screen *screen);
 131 void llvmpipe_init_context_resource_funcs(struct pipe_context *pipe);
 132
 133
 134 static INLINE boolean
 135 llvmpipe_resource_is_texture(const struct pipe_resource *resource)
 136 {
 137    switch (resource->target) {
 138    case PIPE_BUFFER:
 139       return FALSE;
 140    case PIPE_TEXTURE_1D:
 141    case PIPE_TEXTURE_1D_ARRAY:
 142    case PIPE_TEXTURE_2D:
 143    case PIPE_TEXTURE_2D_ARRAY:
 144    case PIPE_TEXTURE_RECT:
 145    case PIPE_TEXTURE_3D:
 146    case PIPE_TEXTURE_CUBE:
 147       return TRUE;
 148    default:
 149       assert(0);
 150       return FALSE;
 151    }
 152 }
 153
 154
 155 static INLINE boolean
 156 llvmpipe_resource_is_1d(const struct pipe_resource *resource)
 157 {
 158    switch (resource->target) {
 159    case PIPE_BUFFER:
 160    case PIPE_TEXTURE_1D:
 161    case PIPE_TEXTURE_1D_ARRAY:
 162       return TRUE;
 163    case PIPE_TEXTURE_2D:
 164    case PIPE_TEXTURE_2D_ARRAY:
 165    case PIPE_TEXTURE_RECT:
 166    case PIPE_TEXTURE_3D:
 167    case PIPE_TEXTURE_CUBE:
 168       return FALSE;
 169    default:
 170       assert(0);
 171       return FALSE;
 172    }
 173 }
 174
 175
 176 static INLINE unsigned
 177 llvmpipe_layer_stride(struct pipe_resource *resource,
 178                       unsigned level)
 179 {
 180    struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
 181    assert(level < LP_MAX_TEXTURE_2D_LEVELS);
 182    return lpr->img_stride[level];
 183 }
 184
 185
 186 static INLINE unsigned
 187 llvmpipe_resource_stride(struct pipe_resource *resource,
 188                          unsigned level)
 189 {
 190    struct llvmpipe_resource *lpr = llvmpipe_resource(resource);
 191    assert(level < LP_MAX_TEXTURE_2D_LEVELS);
 192    return lpr->row_stride[level];
 193 }
 194
 195
 196 void *
 197 llvmpipe_resource_map(struct pipe_resource *resource,
 198                       unsigned level,
 199                       unsigned layer,
 200                       enum lp_texture_usage tex_usage);
 201
 202 void
 203 llvmpipe_resource_unmap(struct pipe_resource *resource,
 204                         unsigned level,
 205                         unsigned layer);
 206
 207
 208 void *
 209 llvmpipe_resource_data(struct pipe_resource *resource);
 210
 211
 212 unsigned
 213 llvmpipe_resource_size(const struct pipe_resource *resource);
 214
 215
 216 ubyte *
 217 llvmpipe_get_texture_image_address(struct llvmpipe_resource *lpr,
 218                                    unsigned face_slice, unsigned level);
 219
 220 void *
 221 llvmpipe_get_texture_image(struct llvmpipe_resource *resource,
 222                            unsigned face_slice, unsigned level,
 223                            enum lp_texture_usage usage);
 224
 225 void *
 226 llvmpipe_get_texture_image_all(struct llvmpipe_resource *lpr,
 227                                unsigned level,
 228                                enum lp_texture_usage usage);
 229
 230 ubyte *
 231 llvmpipe_get_texture_tile_linear(struct llvmpipe_resource *lpr,
 232                                  unsigned face_slice, unsigned level,
 233                                  enum lp_texture_usage usage,
 234                                  unsigned x, unsigned y);
 235
 236
 237 extern void
 238 llvmpipe_print_resources(void);
 239
 240
 241 #define LP_UNREFERENCED         0
 242 #define LP_REFERENCED_FOR_READ  (1 << 0)
 243 #define LP_REFERENCED_FOR_WRITE (1 << 1)
 244
 245 unsigned int
 246 llvmpipe_is_resource_referenced( struct pipe_context *pipe,
 247                                  struct pipe_resource *presource,
 248                                  unsigned level);
 249
 250 unsigned
 251 llvmpipe_get_format_alignment(enum pipe_format format);
 252
 253 #endif /* LP_TEXTURE_H */